CVE-2026-38640 Details
Description
A reachable unwrap in the __assert_fail function (/assert/mod.rs) of relibc commit 61f42d allows attackers to cause a Denial of Service (DoS) via a crafted string.
A denial-of-service vulnerability has been identified in the relibc library, specifically in commit 61f42d. The issue arises from a reachable unwrap in the __assert_fail function, located in the assert module. This vulnerability allows attackers to cause a denial-of-service condition by sending a crafted string that triggers the unwrap panic.
Users can update to the latest version of relibc, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 25, 2026CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Marsman1996/pocs/tree/master/redox/CVE-2026-38640 | [email protected] | ExploitTechnical Description |
| https://gitlab.redox-os.org/redox-os/relibc/-/issues/262 | [email protected] | Issue TrackingPermission RequiredVendor |
| https://gitlab.redox-os.org/redox-os/relibc/-/merge_requests/986 | [email protected] | Permission RequiredVendor |
| https://gitlab.redox-os.org/redox-os/relibc/-/work_items/262 | [email protected] | Issue TrackingPermission RequiredVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| relibc | 61f42d6b93adc552a9e8b6f207fca907e8ca8be2 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 26, 2026 | CVE Modified | CISA-ADP |
| Jun 25, 2026 | New CVE Received | [email protected] |